Install Guide

16 Best Practices for Sharing an iSCSI SAN Infrastructure with Dell PS Series and SC Series Storage using VMware vSphere
Hosts | 2015-A-BP-INF
4.2.3 VMware native multipathing
VMware provides native multipathing that can be used with any storage platform, if a vendor-provided
multipath solution is not available.
4.2.4 Setting Path Selection Policy and storage performance settings - PS Series
In a shared environment, where VMware hosts connect to both PS Series and SC Series storage targets, the
multipath and iSCSI settings optimized by the MEM (described previously) for all PS Series volumes.
Therefore, no modifications are required
4.2.5 Setting Path Selection Policy and storage performance settings - SC Series
In a shared environment, where VMware hosts connect to both PS Series and SC Series storage targets, use
VMware’s native multipathing for SC Series volumes. Setting the Path Selection Policy (PSP) can be
performed using either the vCenter GUI or a command line utility. Setting the PSP Default, and performance
aspects of the PSP can only be performed using a command line utility at this time. Command line utility
options are: ESXi console, SSH session, vSphere CLI, or VMware PowerCLI. The SSH session commands
are shown here:
Note: At the time of this writing, the local vSphere host GUI, the new web-based utility that has replaced the
C# client, does not have the ability to set PSP for volumes.
To set the Path Selection policy as default for new SC Series (SCOS v6.6 and up) volumes:
[root@ESXi-BCM-PS:~] esxcli storage nmp satp set –P VMW_PSP_RR –s VMW_SATP_ALUA
To set or change the PSP for an existing SC Series volume:
[root@ESXi-BCM-PS:~] esxcli storage nmp device set --device=naa.xxx --psp=VMW_PSP_RR
To set the Round Robin IOPS policy for an existing SC Series volume:
[root@ESXi-BCM-PS:~] esxcli storage nmp psp roundrobin deviceconfig set --device=naa.xxx/
--type=iops --iops=3
Note: These settings must be applied manually for each new volume presented to the host. Or, as described
in Dell Storage SC Series Best Practices with VMware vSphere 5.x-6.x, default settings can be modified.